Experiment name: Denmark Str Ovfl (ACM8) Principal Investigator: R.Dickson PI's affiliation: MAFF Lowestoft Mooring Name: 9011 Mooring position: 64.720 deg N, 34.105 deg W Instrument depth: 1124 meters Seafloor depth: 1142 meters Times: starts 12 Jul 1990, ends 29 Jul 1991 Time increment: 60 minutes Instrument type: Aanderaa RCM5 parameter min mean max sd days speed (cm/sec) 1.49 29.60 80.47 12.84 382.3 dir (deg true) 0.36 236.56 359.58 41.82 382.3 u (cm/sec) -79.52 -22.64 44.88 14.56 382.3 v (cm/sec) -59.68 -12.54 28.29 12.61 382.3 temp (deg C) 0.39 1.77 3.38 0.58 382.3 cond (mmho/cm) -9.00 30.64 32.37 3.64 382.3 Speeds are below threshhold for 83 hours in mid-March. This appears to be a rotorcounter failure. In addition the speed series is somewhat spikey throughout. MAFF notes that "The temperature series is noisy, the recorded meter-bit values suggesting a fault in the circuitry with a large number of 511 values appearing. The other channels seem not to be affected." Use these data with extreme caution. The conductivity series contains 75 offscale values that have been removed from the record. The sensor was calibrated indirectly using resistance loops in the cell circuit. CMDAC believes that some (at least) of the spikiness and the below-threshhold speeds mentioned above are instrument errors. An alternate file has been prepared in which some of the more obvious speed spikes have been smoothed by linear interpolation. The below-threshhold episode has been removed. In addition the temperature series has been terminated at 2330 7 Nov 90; data quality beyond that point is poor. A few anomalous directions have been smoothed. Both the original file and the alternate version are available on this disk.
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